Sola scriptura: is the teaching that the Bible is the only inspired and authoritative word of God, is the only source for Christian doctrine, and is accessible to all — that is, it is perspicuous and self-interpreting.
***All Scripture is inspired by God and profitable for teaching, for reproof, for correction, for training in righteousness; that the man of God may be adequate, equipped for every good work. (Psalm 119:18; Psalm 138:2; II Tim. 3:14-17)
Sola fide: is the teaching that justification is received by faith only, without any mixture of or need for good works, though in classical reformed theology, saving faith is always evidenced by good works.
***Even so Abraham believed God, and it was reckoned to him as righteousness. Therefore, be sure that it is those who are of faith who are sons of Abraham. And the Scripture, foreseeing that God would justify the Gentiles by faith, preached the gospel beforehand to Abraham, saying, "All the nations shall be blessed in you." So then those who are of faith are blessed with Abraham, the believer. For as many as are of the works of the Law are under a curse; for it is written, "Cursed is everyone who does not abide by all things written in the book of the law, to perform them." Now that no one is justified by the Law before God is evident; for, "The righteous man shall live by faith." (Galatians 3:6-11)
Sola gratia: is the teaching that salvation comes by God's grace or "unmerited favor" only — not as something merited by the sinner. This means that salvation is an unearned gift from God for Jesus' sake.
***Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly places in Christ, just as He chose us in Him before the foundation of the world, that we should be holy and blameless before Him. In love He predestined us to adoption as sons through Jesus Christ to Himself, according to the kind intention of His will, to the praise of the glory of His grace, which He freely bestowed on us in the Beloved. In Him we have redemption through His blood, the forgiveness of our trespasses, according to the riches of His grace, which He lavished upon us. (Ephesians 1:3-8)
Solo Christo: means that salvation is "by Christ alone," there is no other mediator between God and man for salvation.
***For He delivered us from the domain of darkness, and transferred us to the kingdom of His beloved Son, in whom we have redemption, the forgiveness of sins. And He is the image of the invisible God, the first-born of all creation. For by Him all things were created, both in the heavens and on earth, visible and invisible, whether thrones or dominions or rulers or authorities-- all things have been created by Him and for Him. And He is before all things, and in Him all things hold together. He is also head of the body, the church; and He is the beginning, the first-born from the dead; so that He Himself might come to have first place in everything. (1TI 2:5-6; COL 1:13-18)
Soli Deo Gloria: is the teaching that all glory is to be due to God alone, since salvation is accomplished solely through his will and action — not only the gift of the all-sufficient atonement of Jesus on the cross but also the gift of faith in that atonement, created in the heart of the believer by the Holy Spirit.
***For from Him and through Him and to Him are all things. To Him be the glory forever. Amen. (1CO 10:31; 1PE 4:11; REV 1:6; 2PE 3:1; EPH 3:21; REV 7:12; ROM 11:36)