99. Q. Since we are by nature sinful, how can one ever desire to be holy and to gain heaven where God lives?
        A. Our hearts must be changed before we can be fit for heaven.

(Click through to read scriptural proof.)

• Ephesians 4:17-24

  Now this I say and testify in the Lord, that you must no longer walk as the Gentiles do, in the futility of their minds. [18] They are darkened in their understanding, alienated from the life of God because of the ignorance that is in them, due to their hardness of heart. [19] They have become callous and have given themselves up to sensuality, greedy to practice every kind of impurity. [20] But that is not the way you learned Christ!—[21] assuming that you have heard about him and were taught in him, as the truth is in Jesus, [22] to put off your old self, which belongs to your former manner of life and is corrupt through deceitful desires, [23] and to be renewed in the spirit of your minds, [24] and to put on the new self, created after the likeness of God in true righteousness and holiness.

• Colossians 3:5-12

Put to death therefore what is earthly in you: sexual immorality, impurity, passion, evil desire, and covetousness, which is idolatry. [6] On account of these the wrath of God is coming. [7] In these you too once walked, when you were living in them. [8] But now you must put them all away: anger, wrath, malice, slander, and obscene talk from your mouth. [9] Do not lie to one another, seeing that you have put off the old self with its practices [10] and have put on the new self, which is being renewed in knowledge after the image of its creator. [11] Here there is not Greek and Jew, circumcised and uncircumcised, barbarian, Scythian, slave, free; but Christ is all, and in all. 

[12] Put on then, as God’s chosen ones, holy and beloved, compassionate hearts, kindness, humility, meekness, and patience…..