If ye abide in me, and my words abide in you, ye shall ask what ye will, and it shall be done unto you. – John 15:7
If ye keep my commandments, ye shall abide in my love; even as I have kept my Father’s commandments, and abide in his love. – John 15:10
Ye are my friends, if ye do whatsoever I command you. – John 15:14
If – a condition, requirement, stipulation
a lamp and a light 