By faith Abel offered to God a more excellent sacrifice than Cain, through which he obtained witness that he was righteous, God testifying of his gifts; and through it he being dead still speaks. (Hebrews 11:4, NKJV)
Vital teaching is given here on the nature of faith and worship that is “by faith.” First, we learn what is evident from Cain and Abel; not all worship pleases God (Gen. 4:4-5). Why? Because not all worship is “by faith.” Faith results from hearing God’s word and following it (Rom. 10:17). Abel did that, but Cain did not. Like Abel, we must hear and follow God’s word concerning acceptable worship. Otherwise, we follow Cain’s path of worthless, faithless worship. Second, God testified Abel was righteous based on his gifts. God said Abel’s “by faith” worship pleased Him (cf. Heb. 11:6). The question for us is, “Who is bearing witness that our worship is by faith and pleasing to God?” We can rule out our personal feelings. Cain felt his worship was good (see his angry reaction, Gen. 4:5). Acceptable worship is not defined by how a person feels about it, or by how he feels when he offers it. Billions of souls feel their worship pleases God, yet that does not make it so (Prov. 14:12). God’s word testifies that worship in spirit and truth is “by faith” (Jno. 4:23-24). All other worship, by definition, is not by faith. What is God testifying about the gifts we bring Him? Are they “by faith,” or are they faithless?