Committed sins. Sin regarded as an act. The state is expressed by ἁμαρτίαν οὐκ ἔχομεν we have no (or not) sin (1Jo 1:8).
We make Him (ποιοῦμεν αὐτὸν)
A phrase characteristic of John. See Joh 5:18; Joh 8:53; Joh 10:33; Joh 19:7, Joh 19:12.
His word (ὁ λόγος αὐτοῦ)
Not the personal Word, as Joh 1:1, but the divine message of the Gospel. See Luk 5:1; Luk 8:11; Act 4:31; Act 6:2, Act 6:7, etc. Compare “the truth is not in us” (1Jo 1:8). The truth is the substance of the word. The word carries the truth. The word both moves the man (Joh 8:31, Joh 8:32) and abides in him (Joh 5:38; Joh 8:37). The man also abides in the word (Joh 8:31).