Psalm 116:16 New English Translation

¹⁶Yes, Lord! I am indeed your servant;
I am your servant, the son of your female servant.^[a]
You saved me from death.^[b]

Psalm 116:16 tn Heb “I am your servant, the son of your female servant.” The phrase “son of a female servant” (see also Ps 86:16) is used of a son born to a secondary wife or concubine (Exod 23:12). In some cases the child’s father is the master of the house (see Gen 21:10, 13; Judg 9:18). It may used metaphorically and idiomatically to emphasize the psalmist’s humility before the Lord and his status as the Lord’s servant. Or it may be a reference to the psalmist’s own mother who also was a servant of the Lord.
Psalm 116:16 tn Heb “you have loosed my bonds.” In this context the imagery refers to deliverance from death (see v. 3).

New English Translation (NET)