"And this is life eternal, that they might know You, the only true God, and Jesus Christ whom You have sent." John 17:3
"Come now, and let us reason together says the Lord: though your sins be as scarlet, they shall be as white as snow; though they be like crimson, they shall be as wool" Isaiah 1:18
The gospel is made to be the most reasonable and logical message that God's people have ever heard in their life. The gospel, used by the Spirit of God, is a message that is clear to them, trust worthy, backed with promises from the God who cannot lie, based on unchanging, absolute truth that is used to actually convert the soul. The Spirit convinces the elect of the doctrinal truths of the gospel and the converted sinner now understands and loves the truth and has his assurance of salvation strengthened in this gospel as he lives by faith (Rom 1:17, Heb 6:13-20, II Peter 1:2-10).
God uncovers the mystery of the gospel by revealing it to us and gives us an understanding that we might know Him (Matt 11:25-27, John 17:3, I Cor 2:10, II Cor 4:6, Eph 1:18, Phil 3:8, I John 5:20). God must give us a spiritual capacity to know and understand because since the sin of Adam, Man has lost his ability to receive spiritual things (II Cor 2:14). Before God gives His people spiritual life, faith and understanding they are in a state of condemnation and have no understanding of the value of the object of faith, Christ Jesus the Righteous. Before faith is given, the sinner has natural prejudices against God and His only way of salvation by the merits of Christ. The sinner is too busy comparing himself with other people (II Cor 10:12) instead of comparing himself God's only standard which is Christ and His perfect obedience. Without fail they are trusting in the way that seems right to them and are going about to establish a righteousness of their own (Prov 14:12, Rom 10:2-3). God's way is unreasonable and not logical to the spiritually dead sinner and he is hostile toward God's gospel of grace.
Jesus Christ is the logic/language-Living Word of God in the person of the God-man Mediator. Who He is and what He has done for salvation is made real to us by knowledge and revelation, then the dullness and ignorance gap is filled and supplied with the most wisdom ever put together: the gospel of God's free grace in Christ. Faith is NOT a blind leap into the darkness of ignorance, but rather is something God gives us to hold on to all that is true, clear, reasonable, logical, and trust worthy. Let us not muddy the waters by promoting ignorance, doubt, unreasonableness, paradox, and vagueness where scripture does not (Prov 1:22). Thank God for His irresistible, converting, sovereign grace!