Passage
and I testify again to every man circumcised, that he is a debtor to do the whole law;
and I testify again to every man circumcised, that he is a debtor to do the whole law;
Galatians 5:1 In the freedom, then, with which Christ did make you free--stand ye, and be not held fast again by a yoke of servitude;
Galatians 5:2 lo, I Paul do say to you, that if ye be circumcised, Christ shall profit you nothing;
Galatians 5:3 and I testify again to every man circumcised, that he is a debtor to do the whole law;
Galatians 5:4 ye were freed from the Christ, ye who in law are declared righteous; from the grace ye fell away;
Galatians 5:5 for we by the Spirit, by faith, a hope of righteousness do wait for,
The verse centers on "testify", "again", "circumcised", "debtor", and "whole". It is saying that the verse draws attention to "testify" and "again", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 2's "lo I Paul do say to you..." into verse 4's "ye were freed from the Christ ye...", so "testify" and "again" belong inside that flow. In Galatians context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "testify" and "again" with trust shaped by these words, not by a vague optimism outside the passage.