Psalm 103 is traditionally attributed to King David, who is considered one of the most significant figures in the Bible and a central character in Jewish and Christian traditions. From an evangelical Christian perspective, David is revered not only as a king but also as a prophet and a man after God’s own heart (as noted in 1 Samuel 13:14 and Acts 13:22).

**Psalm 103:17-18 (ESV)** states:

> “But the steadfast love of the Lord is from everlasting to everlasting on those who fear him, and his righteousness to children’s children, to those who keep his covenant and remember to do his commandments.”

### Context of Psalm 103:
– **Theme of Praise**: This psalm is a song of praise that reflects on God’s mercy, love, and faithfulness. David expresses deep gratitude for God’s benefits and forgiveness.
– **Emphasis on God’s Character**: Verses 17-18 highlight the enduring nature of God’s love and righteousness, particularly in relation to those who revere Him and follow His commands.

### Interpretation:
From an evangelical standpoint, these verses are often interpreted as an affirmation of God’s covenant love that extends across generations. This underscores the importance of maintaining a relationship with God and living according to His commandments.

### Significance:
1. **Covenantal Relationship**: The mention of “children’s children” emphasizes that God’s faithfulness is not just for individuals but also for their descendants, highlighting the generational impact of faith.
2. **Encouragement**: The verses serve as an encouragement for believers to live a life that honors God, reinforcing the idea that obedience to His commandments is both a response to His love and a means to continue experiencing His blessings.

In summary, Psalm 103:17-18 is attributed to David and reflects the central themes of God’s enduring love, righteousness, and the importance of following His covenant, all viewed through the lens of evangelical belief and theology.