Paul rightly puts forth the reason we should feel compelled to live a godly life: that God saved our lives, in this world and in the next. This puts on us a pleasant moral obligation to live a life of grateful obedience to Him.
“Even so consider yourselves to be dead to sin, but alive to God in Christ Jesus. Therefore do not let sin reign in your mortal body so that you obey its lusts, and do not go on presenting the members of your body to sin as instruments of unrighteousness; but present yourselves to God as those alive from the dead, and your members as instruments of righteousness to God.” Romans 6:11-13 NASB
Gratitude produces in us the impetus to say no to the voice within us to rebel against the God who made us and live according to the inclinations of our own hearts.
“So then, brethren, we are under obligation, not to the flesh, to live according to the flesh- for if you are living according to the flesh, you must die; but if by the Spirit you are putting to death the deeds of the body, you will live.” Romans 8:12-13 NASB
Godly, obedient living fulfills His dying purpose for us —
“For the grace of God has appeared, bringing salvation to all men, instructing us to deny ungodliness and worldly desires and to live sensibly, righteously and godly in the present age, looking for the blessed hope and the appearing of the glory of our great God and Savior, Christ Jesus, who gave Himself for us to redeem us from every lawless deed, and to purify for Himself a people for His own possession, zealous for good deeds.” Titus 2:12-14 NASB
Lord, overwhelm me with the joyful obligation that is the normal response to Your undeserved forgiveness and grace in my life. Motivate me to eagerly live the redeemed life that You have purchased for me with Your own blood.