Commentaries:
Robertson's Word Pictures (NT)
For the truth's sake (dia thn alhqeian). Repetition of the word, one of which John is very fond (I John 1:6, "the truth, as revealed by the Christ, and gradually unfolded by the Spirit, who is truth" (Brooke).
Which abideth in us (thn menousan en hmin). See John 17:19 for "sanctified in truth" and I John 2:6 for abiding in Christ, and so it includes all who are in Christ.
It shall be with us (meq hmwn estai). Confident assertion, not a mere wish. Note the order of the words, "With us it shall be" (estai future middle of eimi).
Other Robertson's Word Pictures (NT) entries containing 2 John 1:2:
1 Peter 1:2
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