Romans 15:1 NIV

1 Corinthians 9:22 NIV
To the weak I became weak, to win the weak. I have become all things to all people so that by all possible means I might save some.

1 Thessalonians 5:14 NIV
And we urge you, brothers and sisters, warn those who are idle and disruptive, encourage the disheartened, help the weak, be patient with everyone.

Galatians 6:1-2 NIV
Brothers and sisters, if someone is caught in a sin, you who live by the Spirit should restore that person gently. But watch yourselves, or you also may be tempted. Carry each other’s burdens, and in this way you will fulfill the law of Christ.

Romans 14:1 NIV
Accept the one whose faith is weak, without quarreling over disputable matters.