A clean heart isn’t merely forgiven, it’s also free of corruption, darkness and lies, inclined toward and aligned with its Creator, free to live according to His design. To the degree that our old man continues to dominate our lives, our heart isn’t clean, and we’re prisoners to sin (2Ti 2:25), which isn’t good. (He 12:14)
God is certainly able to do this, yet one should know how God chooses to go about these things, to understand His methodology in such creative acts. It isn’t what we might think.
Our inclination may be to expect God to zap us such that we’re instantly holy, and all we need to do is sit back and enjoy the excitement. Yet this is a bit disingenuous; like claiming we desire physical cleanliness while neglecting to bathe.
So, while only God can perform miracles, He generally tends to work them through us as we engage with Him in His work. (Php 2:13) It’s no different here: He gives us instructions on how to clean our own hearts, and works the miracle of a clean heart in us as we obey Him, working through our obedience to cleanse us.
How then does God tell us to cleanse our own hearts, and put ourselves in order before God? By paying attention to our thoughts, feelings and motives and constantly holding them up against the Word of God as a plumb line. (Ps 119:9) We hide God’s Word in our heart, so we know it from memory and are constantly thinking about it, so we won’t disobey Him through forgetfulness (De 26:13) or carelessness (Ps 119:11), then we commit to obeying all of it that we can as well as we can. (Ps 119:6)
This makes perfect sense, if we think about it for a bit. How can we even desire a clean heart if we’re still carelessly toying with sin, willing to disobey God, unconcerned about the trajectory of our lives? If we aren’t alert, paying attention, looking for where we might be missing His Way, asking God to help us, we’re acting as if we love darkness, as if we have no real interest in a clean heart.
So, though it’s true no one can fully cleanse their own heart (Pr 20:9), we can’t say that we even want a clean heart unless we’re willing to try, to take the first step and do what God says to do. As we try to obey Him He enables us, and does things in us that we can’t do for ourselves.
As we’re meditating on His word, as we find gaps between our behavior and God’s standard, we ask Him to quicken and enable us to align with Him (Ps 119:25), to make us go in the path of His commandments. (Ps 119:35) We ask Him to expose and correct the lies within us (Ps 119:29), asking Him for enabling grace whenever we need it. (He 4:16)
Since we’re seeking strength to do God’s will, we can be sure He hears us. (1Jn 5:14-15) We have access by faith into this grace wherein we stand, and rejoice that He is transforming our character, step by step into the image of Christ. (Ro 5:2) This is how grace reigns in us through righteousness unto eternal life (Ro 5:21), enabling us to overcome sin. (1Jn 5:4)