en_tn/1sa/26/21.md

Return

Possible meanings are 1) "Return to serve me in my palace" or "Return to your home."

my son

Saul was not David's true father. Saul speaks as if he were David's father to show David that he wants David to trust and respect him as David would trust and respect his own father. (See: rc://en/ta/man/translate/figs-metaphor)

my life was precious in your eyes today

Here the eyes represent seeing, and seeing represents thoughts or judgment. AT: "today you have considered my life to be very valuable" or "today you showed me that you really do respect me" (See: rc://en/ta/man/translate/figs-metaphor)

played the fool

"been very foolish"