Albert Barnes Commentary Psalms 142:1

"I cry with my voice unto Jehovah; With my voice unto Jehovah do I make supplication." — Psalms 142:1 (ASV)

I cried unto the Lord with my voice - See the notes at (Psalms 3:4), where the language is the same. He uttered a loud and audible prayer, though he was alone. It was not a mere mental cry, but he gave expression to his desires.

With my voice unto the Lord did I make my supplication - See (Psalms 30:8). The Hebrew word rendered “did make my supplication,” means to implore favor or mercy. It denotes the language of petition and entreaty, not the language of claim.