How do we know that holiness is attainable for Christians?

Though Christians acknowledge their continued struggle with sin, John Newton encourages believers to aspire towards holiness, as it is a high calling made possible by God’s grace. Scripture, such as Philippians 2:13, insists that it is God who works in us 'to will and to act in order to fulfill his good purpose.' This divine assistance affirms that holiness, while challenging, is not only an ideal but a realistic goal for every believer who desires to reflect Christ’s character. By engaging with the means of grace, believers can grow in their ability to live out a life pleasing to God, constantly seeking to be more like Him, resting in the promise that He enables their efforts.