Visit your average Calvinistic website on the doctrine of eternal security and you will find that many of them isolate a few prooftexts for Arminianism’s view concerning the security of the believer to address. Most will look at John 15:1-5; Hebrews 6:4-6; 10:26-27; and 2 Peter 2:20-22. A few will throw in some other passages here and there. However, these verses are the capstone, if it were, of the Arminian argument for conditional security.
Robert Shank in his book, Life In The Son, has an appendix in the back that lists 85 passages of Scripture that teach conditional security. These verses are not meant to debate losing your salvation but simply to show that Arminians have more than a few passages of Scripture that teach that we are to continue in the faith until the very end. I will post these passages and would encourage you all to memorize them if possible as I did several years ago by writing them down in my journal and then looking up each reference followed by taking each passage and memorizing it as much as possible. This is helpful even if you are not an Arminian (Colossians 3:16-17).
Matthew 18:21-35; 24:4,5, 11-13, 23-26; 25:1-13
Luke 8:11-15; 11:24-28; 12:42-46
John 6:66-71; 8:31-38, 51; 13:8; 15:1-6
Acts 11:21-23; 14:21,22
Romans 6:11-23; 8:12-14, 17; 11:20-22; 14:15-23
1 Corinthians 9:23-10:21; 11:29-32; 15:1-2
2 Corinthians 1:24; 11:2-4; 12:21-13:5
Galatians 5:1-4; 6:7-9
Ephesians 3:17
Philippians 2:12-16; 3:4-4:1
Colossians 1:21-23; 2:4-8, 18-19
1 Thessalonians 3:1-8
1 Timothy 1:3-7, 18-20; 2:11-15; 4:1-16; 5:5,6, 8, 11-15; 6:9-12, 17-21
2 Timothy 2:11-18, 22-26; 3:13-15
Hebrews 2:1-3; 3:6-19; 4:1-16; 5:8-9; 6:4-20; 10:19-39; 11:13-16; 12:1-29; 13:7, 9-14, 17
James 1:12-16, 21-22; 2:14-26; 4:4-10; 5:19-20
1 Peter 1:5-9, 13
2 Peter 1:5-11; 2:1-22; 3:16-17
1 John 1:5-2:11; 2:15-3:10; 5:4-5, 16
2 John 6, 9
Jude 5, 12
Revelation 2:7, 10-11, 17-26; 3:4-5, 8-12, 14-22; 12:11; 17:14; 21:7-8; 22:18-19
[Link to original post and comments at Roy Ingle’s website]