Catholic Answer
Yes, indeed, all Christians are called by their baptism and confirmation to spread the Gospel primarily through their lives and actions, but with words, if necessary:Preach the gospel at all times -- If necessary, use words."
-- Saint Francis of Assisi
from The Catechism of the Catholic Church, second edition, English translation 1994
904 "Christ . . . fulfills this prophetic office, not only by the hierarch . . . but also by the laity. He accordingly both establishes them as witnesses and provides them with the sense of the faith [sensus fidei] and the grace of the word" (Lumen Gentium 35)
To teach in order to lead others to faith is the task of every preacher and of each believer. (St. Thomas Aquinas, Summa Theologiae III, 71, 4 ad 3.)
When the Gospel is announced, Catholics make a small sign of the cross on their foreheads, their lips, and their chest.
Word of mouth
Airplanes do not generally spread any religious messages.
To spread the gospel to the sinners of the world.
by singing it and making it public
he used his educaion as an effective speaker to spread the gospel
lure people to the church
Paul who as initially known as Saul. Spread the gospel as to establish the Church in the Roman Empire.
Catholics, the world over, by the preaching of the Gospel and by the healing ministry of the Church in the Sacraments (Reconciliation and Anointing of the Sick) bring Christ's healing to people.
To spread the Gospel of Christ by using pictures as learning aids.
tend to the ill, feed the hungry and spread the gospel
Their basic mission was to spread the Christian gospel.