choose out. Septuagint and Vulgate read "choose for myself".
men. Hebrew. 'ish.App-14.
I will. Ahithophel manifests personal vengeance. See note on 2Sa_16:21 with 2Sa_17:11.
this night. Compare Psa_4:8. Psalm 4 is concerning inheritances. David's was in jeopardy (2Sa_17:2), but his trust was in Jehovah's favour (2Sa_15:26; 2Sa_22:20. Psa_18:19).