God's faithfulness means that God will always do what He said and fulfill what He has promised.
Wayne GrudemI think that ultimately we will attain much more depth of understanding of Scripture when we are able to study it in the company of a great number of scholars who all begin with the conviction that the Bible is completely true and absolutely authoritative.
Wayne GrudemThe sufficiency of Scripture means that Scripture contained all the words of God he intended his people to have at each stage of redemptive history, and that it now contains all the words of God we need for salvation, for trusting him perfectly, and for obeying him perfectly.
Wayne GrudemOur justification from sins takes place at the point of saving faith, not at the point of water baptism, which usually occurs later. But if a person is already justified and has sins forgiven eternally at the point of saving faith, then baptism is not necessary for forgiveness of sins nor for the bestowal of new spiritual life. Baptism, then, is not necessary for salvation. But it is necessary if we are to be obedient to Christ, for he commanded baptism for all who believe in him.
Wayne Grudem