Whoever does not receive the kingdom of God as a little child will by no means enter it.
Mark 10:15.
Trust in the LORD with all your heart, and lean not on your own understanding; in all your ways acknowledge him, and he will direct your paths.
Proverbs 3:5.6
Faith is definitely not a leap in the dark! However, it must be faith that is based on solid facts and God’s credible testimony. Everyone must examine and accept them. No-one will be able to reproach God with not having given an adequate witness of Himself.
On the other hand, our own insight will never be able to comprehend God. Logical arguments would never suffice to convince us absolutely; God therefore addresses our heart and mind through the Bible. Just as a child takes in and trusts his father’s explanations, so, too, must we simply accept what God has revealed to us. Salvation can be grasped only through an act in which our conscience, our will and our affections are equally involved.
In the view of those who are lost, faith in the crucified Christ is folly. For the believer, however, it is the liberating assurance that convinces his heart.
But faith does not save because it is harmonious, logical, attractive or even convincing. Faith saves because God has so arranged it. God wishes everyone to be saved. Therefore He orders everybody to repent (cf. 1 Timothy 2:4; Acts 17:30).
Whoever does not believe in Him, change his way of life thoroughly and turn to God, is truly disobedient towards God.