Retain - Vine's Expository Dictionary of New Testament Words
Retain
[ 1,,G2902, krateo ]to be strong, obtain, hold, hold fast," is translated "to retain," of sins, John 20:23 (twice); See on REMIT. See HOLD, KEEP, OBTAIN, TAKE.
Notes:
(1) In Philemon 1:13, AV, katecho, "to hold fast, hold back, detain," is translated "to retain" (RV, to keep).
(2) In Romans 1:28, AV, echo, "to have" (RV), is translated "to retain."