He gave man what he needed, but man is sinful (Ecc 7:29).If an employer requires an employee to move a ton load but does not give the employee what is needed to move the load and then fires the employee for not moving the load is that fair and just in any sense of the words???
One doesn't want fairness from God. God being fair condemns one to eternal punishment.If man can only have faith if it's given to him by God, how then can it be fair and just for God to command men to believe (as in Acts 16:31) but then not give one belief? God is causing men to sin against the command for man to have faith.
What one wants from God is mercy.
FYI, God owes no one salvation (Ex 33:19; Rom 9:15).