... what is preferable in the sight of God ...

That which God -- glorified be His Name! -- hath desired for Himself is the hearts of His servants, which are the treasuries of His love and remembrance and the repositories of His knowledge and wisdom. It hath ever been the wish of the Eternal King to cleanse the hearts of His servants from the things of the world and all that pertaineth thereunto, that they may be made worthy recipients of the effulgent splendours of Him Who is the King of all names and attributes. Wherefore must no stranger be allowed in the city of the heart, that the incomparable Friend may enter His abode. By this is meant the effulgence of His names and attributes, and not His exalted Essence, inasmuch as that peerless King hath ever been, and shall eternally remain, sanctified above ascent and descent.
It followeth, therefore, that rendering assistance unto God, in this day, doth not and shall never consist in contending or disputing with any soul; nay rather, what is preferable in the sight of God is that the cities of men's hearts, which are ruled by the hosts of self and passion, should be subdued by the sword of utterance, of wisdom and of understanding. Thus, whoso seeketh to assist God must, before all else, conquer, with the sword of inner meaning and explanation, the city of his own heart and guard it from the remembrance of all save God, and only then set out to subdue the cities of the hearts of others.

Baha'u'llah, The Summons of the Lord of Hosts,