In 1 Corinthians 7:17, Paul establishes the same principle: each should walk as God has called him. This reinforces the command to remain in one's calling.

In 1 Corinthians 7:21-23, Paul applies the principle to slaves: remain but use freedom if possible, for you are Christ's freedmen. This expands the teaching.

In 1 Corinthians 7:24, Paul restates: in whatever condition called, remain with God. This is a direct restatement of the principle.

In 1 Corinthians 7:27, Paul applies the principle to marriage: don't seek to change marital status — further application of staying in calling.