Psalms 119:99

“I have more understanding than all my teachers, etc.] Such as had been or would have been his teachers, who were bad ones in religious matters; especially such might be the religious teachers in Saul’s time, when David was a young man: as the priests, whose lips should keep knowledge, and deliver it to the people, were in the times of Malachi; and as the Scribes and Pharisees, who, sat in Moses’s chair, were in Christ’s time; and as those legal teachers were in the apostles’ times, who would be teachers of the law, not knowing what they said, nor whereof they affirmed; such as these David exceeded in spiritual understanding. Or his good teachers are meant; and though in common it is true…”

“I have more understanding than all my teachers - Referring perhaps to those who had given him instruction in early life. By constant meditation on the law of God, he had, in the progress of years, advanced to a point beyond that to which they had arrived. He had improved upon their suggestions and instructions, until he had surpassed them in knowledge. His “design” in saying this was to set forth the excellency and the fullness of the law of God, and to show how the study of it was suited to enlarge the understanding. In early life the wisdom of teachers seems to be far beyond anything that we can hope to reach; yet a few years of study and meditation may place us far beyond them. What those…”

“than all: Deu 4:6-8; Sa2 15:24-26; Ch1 15:11-13; 2Chr. 29:15-36, Ch2 30:22; Jer 2:8; Jer 8:8, Jer 8:9; Mat 11:25, Mat 13:11, Mat 15:6-9, Mat 15:14, Mat 23:24-36; Heb 5:12 for thy: Psa 119:24; Ti2 3:15-17 Psalms 119:100”