"Chapter 42—Development and Service Christian life is more than many take it to be. It does not consist wholly in gentleness, patience, meekness, and kindliness. These graces are essential; but there is need also of courage, force, energy, and perseverance. The path that Christ marks out is a narrow, self-denying path. To enter that path and press on through difficulties and discouragements requires men who are more than weaklings. MH 497"
"And beside this, giving all diligence, add to your faith virtue; and to virtue knowledge; And to knowledge temperance; and to temperance patience; and to patience godliness; And to godliness brotherly kindness; and to brotherly kindness charity."
Both passages discuss the qualities needed for Christian living. 2 Peter 1:5-7 lists specific virtues to add to faith, while EGW emphasizes the need for courage, force, energy, and perseverance in addition to gentler qualities. The connection lies in the shared theme of developing a well-rounded Christian character.