Verily I ask God to protect thee from the waves of tests and storms of trial until thou becomest firm in the Cause of thy Lord -- a firmness whereby thou be enabled to withstand all nations and peoples. When thou art thus confirmed by God, with firmness and solidity in His Covenant among the people, thou wilt see the hosts of the Kingdom shelter thee from all sides with banners whereunto all heads bow.
Firmness
‘Abdu’l-Bahá, Tablets of ‘Abdu’l-Bahá v2, p. 267
He has named it the "Book of the Covenant," therefore consider that if the friends remain firm in the Covenant will there be any misunderstandings among them? No, by God!
Compilations, Bahá’í Scriptures, p. 547
