When I thought to know this - When I endeavored to comprehend this, or to explain it to myself. The idea is that he “thought” on th…

When I thought ... —i.e., when I reflected in order to know this —when I tried to think the matter out, get at t…

When I thought to know this, it was too painful for me; Until I went into the sanctuary of God; then understood I their end.

He went…

Although I applied my mind to know this. The first verb, חשב, chashab, which he uses, properly signifies to reckon or