Charles Ellicott Commentary Psalms 40:1

"I waited patiently for Jehovah; And he inclined unto me, and heard my cry." — Psalms 40:1 (ASV)

I waited patiently. —As the margin shows, this is expressed by the common Hebrew idiom the infinitive absolute with the preterite. We may nearly express it by repetition: I waited and waited.

Inclined ... —Either intransitive , or with ellipse of the word “ear,” which usually is found with the verb in this conjugation. (Psalms 31:2.)