Psalm 119:11 reveals the method: hiding God's word in the heart to avoid sin, directly answering the question in verse 9.

In Psalm 1:1-3, the blessed person delights in God's law and is like a fruitful tree — an extended metaphor for how living by the word keeps one pure.

In Psalm 19:7-11, God's law is described as perfect, reviving the soul and making wise — showing the qualities of the word that enable purity.

In Psalm 78:4-8, the call to teach God's works to the next generation so they will keep his commandments — directly supporting how a young person stays pure.

In Psalm 17:4, the psalmist avoids violent ways by God's word, directly mirroring the method of keeping one's way pure.

In Psalm 39:1, guarding one's ways to avoid sin with the tongue parallels the psalm's focus on purity through active vigilance.

Psalm 25:7 asks God to not remember sins of youth — complementing 119:9's question about a young man keeping his way pure.

Proverbs 4:10-17 describes walking in uprightness and avoiding evil — a detailed expansion of the principle in 119:9 for keeping one's way pure.

In James 1:21-25, the implanted word saves and requires doing — showing that purity comes from receiving and obeying the word.

In 2 Timothy 3:15-17, Scripture equips for every good work — explaining how the word fully enables a pure life.

2 Timothy 2:22 commands to flee youthful lusts and pursue righteousness, directly echoing the call to keep one's way pure.

In John 15:3, Jesus says His words make his disciples clean — a direct New Testament parallel to being purified by God's word.

Luke 15:13 depicts the prodigal son wasting his inheritance in reckless living — the opposite of a young man keeping his way pure.

In Deuteronomy 6:6-9, God commands His words to be on the heart and taught to children — the foundational practice for living according to the word.

Proverbs 1:10 warns a son not to consent to sinners' enticement — directly addressing the same concern as 119:9 for a young man's purity.

In Joshua 1:7, Joshua is commanded to be strong and obey the law without turning aside — the same path to success and purity through the word.

In Proverbs 2:1, receiving and treasuring God's words is the foundation for wisdom and purity, directly supporting the psalm's advice.

2 Timothy 3:16 explains Scripture's profitability for training in righteousness, validating why guarding by the word leads to purity.

In 2 Kings 10:31, Jehu's failure to walk in God's law contrasts with the psalm's call to guard one's way by the word.

In 2 Chronicles 34:3, young Josiah seeks God and purges idolatry, exemplifying a young man keeping his way pure through devotion to God's word.

John 17:17 directly ties sanctification to God's truth—'your word is truth'—affirming the psalm's method of purity through Scripture.

In Proverbs 6:22, parental commands (God's word) lead, watch over, and speak to a person, echoing the guarding and guidance in the psalm.

In Proverbs 2:11, discretion and understanding guard a person, paralleling the psalm's idea of guarding one's way by God's word.

Proverbs 7:7 describes a young man lacking sense who is led astray — the opposite of one who keeps his way pure through the word.

Job 13:26 laments being punished for sins of youth — a contrast to 119:9's proactive desire for purity through God's word.

2 Corinthians 7:1 calls for cleansing from defilement, extending the psalm's purity theme with a New Covenant motivation of God's promises.

2 Timothy 2:21 promises honorable use for those who cleanse themselves, echoing the psalm's goal of being pure and useful for God.

Proverbs 6:20-35 expands on keeping commands to avoid adultery, reinforcing the theme of purity through adherence to instruction.

Proverbs 5:7-23 warns against the forbidden woman, echoing the call to keep one's way pure through heeding instruction.

Proverbs 1:4 states the purpose of giving prudence to the youth — aligning with 119:9's goal of keeping a young man's way pure through God's word.

Hebrews 2:1 warns against drifting from what was heard, complementing the psalm's call to guard one's way by paying close attention to God's word.

Ecclesiastes 12:1 calls to remember God in youth, complementing the idea of keeping one's way pure through adherence to His word.

Job 1:5 shows Job's concern for his children's purity, offering sacrifices for possible sin — reflecting the same desire for purity in 119:9.

Titus 2:4-6 instructs young people to be self-controlled, aligning with the call to keep one's way pure through God's word.