Belief 26 of 28 · Doctrines of Last Day Events
Death and Resurrection
The wages of sin is death. But God, who alone is immortal, will grant eternal life to His redeemed. Until that day, death is an unconscious state for all people. When Christ — our life — appears, the resurrected righteous and the living righteous will be glorified and caught up to meet their Lord. The second resurrection, of the unrighteous, will take place a thousand years later.
Ecclesiastes 9:5
For the living know that they will die, but the dead don't know anything, neither do they have any more a reward; for their memory is forgotten.
Other Bible references for this belief
Job 19:25-27 · Psalm 146:3,4 · Ecclesiastes 9:5,6,10 · Daniel 12:2,13 · Isaiah 25:8 · John 5:28,29 · John 11:11-14 · Romans 6:23 · Romans 16 · 1 Corinthians 15:51-54 · Colossians 3:4 · 1 Thessalonians 4:13-17 · 1 Timothy 6:15 · Revelation 20:1-10
Look these up in your Bible app of choice for the full text — World English Bible (public domain), ESV, NIV, NKJV, NASB are all good.