OET interlinear 1 SAM 15:25

uW Translation Notes:

Note 1 topic: figures-of-speech / metaphor

שָׂ֥א & אֶת־חַטָּאתִ֑⁠י

(Some words not found in UHB: and=now pardon now DOM sin_of,my and,return with,me so,that_I_may_bow_down to/for=YHWH )

Saul is speaking as if sin were an object that could be physically removed. If it would be clearer in your language, you could state the meaning plainly. Alternate translation: [pardon my sin] or [ask Yahweh to forgive my sin]

Note 2 topic: figures-of-speech / explicit

וְ⁠שׁ֣וּב עִמִּ֔⁠י וְ⁠אֶֽשְׁתַּחֲוֶ֖ה לַֽ⁠יהוָֽה

and,return (Some words not found in UHB: and=now pardon now DOM sin_of,my and,return with,me so,that_I_may_bow_down to/for=YHWH )

Saul seems to be asking Samuel to sacrifice some of the plundered animals himself in order to lead him and his soldiers in worship. You could indicate this explicitly in your translation if that would be helpful to your readers. The UST models one way to do that.