Commentaries:
Robertson's Word Pictures (NT)
With my Father (para tw patri). Locative case of pathr and article used as possessive (common idiom), "by the side of my Father," picture of intimate fellowship like prov ton qeon (face to face with God) in John 1:1.
From your father (para tou patrov). Ablative case with para (from the side of) and same possessive use of tou in each instance, though "the" will really answer both times. But o pathr does not mean the same person. Christ's Father by contrast is not their father.
Other Robertson's Word Pictures (NT) entries containing John 8:38:
John 7:6
John 8:40
John 8:41
John 16:22
Galatians 3:7
1 John 3:10
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