307. The first commandment of the Law demands faith, that we believe God is the only helper in time of need, Ps 9, 9. The second commandment demands confession and prayer, that we call upon the name of Jehovah in times of peril and give thanks unto God. The third commandment requires that we teach the truth, and that we guard and defend sound doctrine. These are the true and appropriate acts of the worship of God, and they are those which God requires. He requires not sacrifices nor money nor anything of the kind. As regards the first table, he requires that we hear, consider and teach the Word; that we pray to God and fear him. 308. Where these things exist, the observances and works required by the second table follow, as it were, of their own accord. It is impossible that he who does the works and performs the worship of the first table should not do and perform those of the second table also. David saith: "His delight is in the law of Jehovah; and on his law doth he meditate day and night. And he shall be like a tree planted by the stream of water; that bringeth forth its fruit in its season, whose leaf also doth not wither." Ps 1, 2-3. These things are evident consequences of the right worship of God, according to the commandments of the first table. He who believes God, who fears God, who calls upon God in tribulation, who praises God and gives thanks unto him for his mercies, who gladly hears the Word of God, who continually contemplates the works of God, and who teaches others to do the same things--do you think that such a one will harm his neighbor, or disobey his parents, or kill, or commit adultery? 309. The first table, therefore, is to be set forth first of all, and instruction as regards the true worship is to receive precedence to all else. This means, first to make the tree good on which good fruit is to grow. Now, our adversaries take the diametrically opposite course; they want to have the good fruit before they have even the tree. 310. Moreover, I believe that about this time there was added some visible ceremony of divine worship, for God is ever wont thus to do. He always joins with the Word some visible sign. When Abel and Cain presented their offerings God showed by a visible sign from heaven that he had respect unto Abel and his offering, but not unto Cain and his offering. And so, in all probability, it was in this case and at this time. When the Church began to flourish and the Word of God was publicly taught with considerable success, God added also some visible sign, that the Church might assuredly know that she pleased God.