We Lutherans and other advocates of infant baptism say that they can too have faith! Just as they live in dependence and trust in their mother and father and receive their love, they can live in dependence and trust in their Heavenly Father and receive His love. That’s what faith is. Not reason. Not a decision.
Jesus makes the faith of a child–not the faith of an adult–our benchmark:
And calling to him a child, he put him in the midst of them and said, “Truly, I say to you, unless you turn and become like children, you will never enter the kingdom of heaven. Whoever humbles himself like this child is the greatest in the kingdom of heaven. (Matthew 18:2-4)