To the weak became I as weak i.e. by an affectionate condescension to their prejudices (ch. 1 Corinthians 8:13; cf. Romans 15:1; 2 Corinthians 11:29).

I am made(literally, become) all things to all men Not in the sense of sacrifice of principle, but by the operation of a wide reaching sympathy, which enabled him, without compromising his own convictions, to approach all men from their most accessible side. See notes on 1 Corinthians 9:20-21, and ch. 1 Corinthians 10:32.

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