Secondly, the Tabernacle is a type of the Lord Jesus Himself, particularly of Him here on earth during the days of His flesh. Just as the Tabernacle was Jehovah’s dwelling-place in the midst of Israel so are we told that “God was in Christ reconciling a world unto Himself
Shittim wood” is acacia wood, which is light and strong. According to Cole, in v. 2, “every man whose heart makes him willing,” means literally in the Hebrew ‘every man whose heart makes him vow:’ he cannot help himself.”
The word “heart” referred in the Hebrew not to the seat of the emotions but to the seat of thought, purpose, and will. Thus the offering was to come not merely from those who felt like giving, but from those who knew and were committed to the offering as the right thing to do.