Strong's #834: 'aher (pronounced ash-er')
 a primitive relative pronoun (of every gender and number); who, which, what, that; also (as an adverb and a conjunction) when, where, how, because, in order that, etc.:--X after, X alike, as (soon as), because, X every, for, + forasmuch, + from whence, + how(-soever), X if, (so) that ((thing) which, wherein), X though, + until, + whatsoever, when, where (+ -as, -in, -of, -on, -soever, -with), which, whilst, + whither(- soever), who(-m, -soever, -se). As it is indeclinable, it is often accompanied by the personal pronoun expletively, used to show the connection.
Brown-Driver-Briggs Hebrew Lexicon:
 ׁ 
  'ăsher 
 
 1) (relative participle)
 
 1a) which, who
 1b) that which
 
 2) (conjunction)
 
 2a) that (in object clause)
 2b) when
 2c) since
 2d) as
 2e) conditional if
 
  Part of Speech: relative particle
 
 conjunction
 
Relation: a primitive relative pronoun (of every gender and number)
Usage:
This word is used 5448 times:
Jeremiah 52:20: "that were under the bases,  which king Solomon had made"
Jeremiah 52:25: "the city a eunuch,  which the charge of the men"
Jeremiah 52:25: "of them that were near the king's person,  which were found in the city; and the principal"
Jeremiah 52:28: "This is the people  whom Nebuchadnezzar carried away captive: in the seventh three"
Jeremiah 52:32: "the throne of the kings  that were with him in Babylon,"
Lamentations 1:7: "and of her miseries all  that she had in the days of old,"
Lamentations 1:10: "that the heathen entered into her sanctuary,  whom thou didst command that they should not enter into thy congregation."
Lamentations 1:12: "there be any sorrow like unto my sorrow,  which is done unto me, wherewith the LORD"
Lamentations 1:12: "any sorrow like unto my sorrow, which is done  unto me, wherewith the LORD hath afflicted me in the day"
Lamentations 1:22: "come before thee; and do  unto them, as unto me for all my transgressions:"
Lamentations 2:17: "The LORD hath done  that which he had devised; he hath fulfilled his word he had commanded"
Lamentations 2:17: "he had devised; he hath fulfilled his word  that he had commanded in the days of old:"
Lamentations 2:22: "anger none escaped nor remained:  those that I have swaddled and brought up"
Lamentations 4:20: "of the LORD, was taken in their pits,  of whom we said, Under his shadow we shall live among the heathen."
Ezekiel 1:12: "every one straight forward:  whither the spirit to go,"
Ezekiel 1:16: "likeness: and their appearance and their work  was as it were a wheel in the middle of a wheel."
Ezekiel 1:20: "Whithersoever  Whithersoever the spirit was to go, they went, thither"
Ezekiel 1:25: "a voice from the firmament  that was over when they stood,"
Ezekiel 1:26: "And above the firmament  that was over their heads was the likeness"
Ezekiel 1:28: "As the appearance of the bow  that is in the cloud in the day so"
Ezekiel 2:2: "And the spirit entered  into me when he spoke unto me, and set my feet,"
Ezekiel 2:3: "to a rebellious nation  that hath rebelled against me: they and their fathers have transgressed"
Ezekiel 2:8: "of man, hear  what say unto thee; Be"
Ezekiel 2:8: "thy mouth, and eat  that I give"
Ezekiel 3:1: "of man, eat  that thou findest; eat this"
Ezekiel 3:3: "with this roll  that I give thee. Then did I eat"
Ezekiel 3:6: "speech language,  whose words thou canst not understand. Surely,"
Ezekiel 3:10: "all  that I shall speak unto thee receive in thine heart,"
Ezekiel 3:20: "given him warning, he shall die in his sin, and his righteousness  which he hath done shall not be remembered;"
Ezekiel 3:23: "stood there, as the glory  which I saw by the river of Chebar:"
Ezekiel 4:4: "upon it: according to the number of the days  that thou shalt lie upon it thou shalt bear"
Ezekiel 4:9: "thee bread thereof, according to the number of the days  that thou shalt lie upon thy side,"
Ezekiel 4:10: "And thy meat  which thou shalt eat shall be by weight, twenty shekels from time"
Ezekiel 4:13: "bread among the Gentiles,  whither I will drive"
Ezekiel 5:6: "more than the countries  that are round about her: for they have refused my judgments"
Ezekiel 5:7: "more than the nations  that are round about you, and have not walked in my statutes,"
Ezekiel 5:7: "have done according to the judgments of the nations  that are round about"
Ezekiel 5:9: "And I will do in thee  that which I have not done, and whereunto do"
Ezekiel 5:9: "that which I have not done,  and whereunto do any more the like,"
Ezekiel 5:14: "thee waste, and a reproach among the nations  that are round about of all that pass by."
Ezekiel 5:15: "an instruction and an astonishment unto the nations  that are round about thee, when I shall execute judgments in thee in anger"
Ezekiel 5:16: "evil arrows of famine,  which for their destruction, and which I will send"
Ezekiel 5:16: "which for their destruction,  and which I will send to destroy you: and I will increase"
Ezekiel 6:9: "And they that escape of you shall remember me among the nations  whither they shall be carried captives, because"
Ezekiel 6:9: "me among the nations whither they shall be carried captives,  because with their whorish"
Ezekiel 6:9: "with their whorish heart,  which hath departed from"
Ezekiel 6:9: "their idols: and they shall loathe themselves for the evils  which they have committed in all"
Ezekiel 6:11: "abominations of the house of Israel!  for they shall fall by the sword, by the famine, and by the pestilence."
Ezekiel 6:13: "thick oak, the place  where they did offer sweet savor"
Ezekiel 7:15: "and the pestilence and the famine within:  he that shall die with the sword;"