What do we mean by full assurance in the New Testament?

In the New Testament, full assurance encapsulates the belief that believers can approach God with absolute confidence due to Christ's atoning sacrifice. Hebrews 10:22 highlights this concept, indicating that through faith, we can draw near to God without fear or hesitation. This assurance is not a mere feeling but a conviction based on the certainty of God's promise and the efficacy of Christ's blood, which cleanses us from sin. Believers are encouraged to maintain this confidence as they partake in fellowship and worship, allowing it to bolster their faith and actions.