Discipleship comes through love and love is the key to everything. People cannot love their neighbour because of the hatred in their hearts, tribe cannot love tribe because of hatred, and nation cannot love nation because of the hatred between them. The love of Christ changes hearts and the things of the world become less important when we look to a higher authority. It was Christ's love for us that took Him to Calvary's Cross and it is through our love for Him and our concern for others that we become His disciple and follow Him which is the Christian calling.
The Christians calling is irrevocable: -
"For the gifts and calling of God are without repentance." (Rom 11:29)
The Christian calling is to preach among the heathen: -
"But when it pleased God, who separated me from my mother's womb, and called me by his grace, to reveal his Son in me, that I might preach him among the heathen;" (Gal 1:15)
The Christian is to be worthy: -
"I therefore, the prisoner of the Lord, beseech you that ye walk worthy of the vocation wherewith ye are called" (Eph 4:1).
Christians are called to be saints: -
"To all that be in Rome, beloved of God, called to be saints: Grace to you and peace from God our Father, and the Lord Jesus Christ." (Rom 1:7)
Christians are to consider Christ will in all we do: -
"Wherefore, holy brethren, partakers of the heavenly calling, consider the Apostle and High Priest of our profession, Christ Jesus;" (Heb 3:1)
Christians are to be consistent: -
"Let every man abide in the same calling wherein he was called." (1Cr 7:2)
Christians have been bought with a price and are the servants of Christ: -
"For he that is called in the Lord, [being] a servant, is the Lord's freeman: likewise also he that is called, [being] free, is Christ's servant. Ye are bought with a price; be not ye the servants of men." 1Cr 7:22
It is a Holy calling: -
"Who hath saved us, and called [us] with an holy calling, not according to our works, but according to his own purpose and grace, which was given us in Christ Jesus before the world began," (2Ti 1:9)
Christians are to be diligent: -
"Wherefore the rather, brethren, give diligence to make your calling and election sure: for if ye do these things, ye shall never fall:" 2Pe 1:10
It is Christ's final commandment: -
"And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth. Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you always, even unto the end of the world. Amen." (Mat 28:16)