1 Corinthians 1 6
In fact the testimony of Christ was proved valid in your experience,
Compare with other 3 random translations
WEB 1 Corinthians 1:6even as the testimony of Christ was confirmed in you—
NIV 1 Corinthians 1:6God thus confirming our testimony about Christ among you.
EAS 1 Corinthians 1:6In that way, God has shown you that the message we told you about Christ is true.