"to be strong, obtain, hold, hold fast," is translated "to retain," of sins, Joh 20:23 (twice); see on REMIT. See HOLD, KEEP, OBTAIN, TAKE.
Notes: (1) In Phm 1:13, AV, katecho, "to hold fast, hold back, detain," is translated "to retain" (RV, to keep). (2) In Rom 1:28, AV, echo, "to have" (RV), is translated "to retain."