Pioneering and Deputizing

Those who cannot pioneer or do travel teaching will want to participate by contributing to the International Deputization Fund. Let them remember Bahá'u'lláh's injunction: "Center your energies in the propagation of the Faith of God. Whoso is worthy of so high a calling, let him arise and promote it. Whoso is unable, it is his duty to appoint him who will, in his stead, proclaim this Revelation . . ." Let the Bahá'ís of the world join in the true spirit of universal participation and win all the victories while there is yet time. Let each assume his full measure of responsibility that all may share the laurels of accomplishment at the end of the Plan.

https://bahai-library.com/uhj_wellspring_guidance#n36