"(The following statement was adopted by the Lutheran Churches of the Reformation) God is the Creator of all human life (Gen. 30:2; 1 Sam. 2:5f; 2 Kgs. 5:7; Acts 17:25,28) and desires to create spiritual life in all sinful human beings, that everyone come to the knowledge of the truth and be saved (1 Tim. 2:4). Married couples should reproduce in observance of the following Biblical principles: 1. The command of God to be "fruitful and multiply" (Gen. 1:28; 9:1,17; 35:11; 1 Tim. 5:10,14; AC XXIII, #5 & 8, Triglot p. 612; AP XXIII, #7-8, Trigl. p. 365-73; LC 6th Comm., # 207, Trigl., p. 6394). 2. Children are a blessing from the Lord (Gen. 1:28; 15:2-5; 17:5f.; 24:60; 33:5; 48:9; 49:25; Lev. 26:9; Deut. 28:4; Josh. 24:3; Ruth 4:11f.; Psalm 107:38; 127:3-5; 128:3-6; 147:13; Prov. 5:18; 17:6; LC 4th Comm., # 105, Trigl. p. 6115). 3. It is God who opens or closes the womb (Gen 16:1-2; 17:15-19; 20:18; 21:1-2; 25:21; 29:31; 30:2-6, 23f; Deut. 32:18; Lev. 20:20f; Judg. 13:3; Ruth 4:13; 1 Sam. l:19f; 2:21; Job 10:8-12; Psalm 22:9-10; 113:9; 139:13-16; Eccles. 11:5; Isa. 8:18; 43:1,7; 44:2,24; 49:1,5; 66:9; Jer. 1:5; Lk. 1:36f, 57f; Heb. 11:11). 4. Having children is a good work for Christians (1 Tim. 2:15; AP XXIII, #32, Trigl. p. 3736). 5. Christians are to be mindful that they are not only to be fruitful and populate the earth, but they are to bring up their children as Christians and thus populate heaven (Prov. 3:21f.; 4:3f., 20-22; Mk. 10:13-16; Acts 2:38f.; Eph. 6:1,4; Heb. 2:10). 6. In Scripture barrenness is regarded as an affliction (Gen. 11:30; 15:2; 16:2; 18:11f.; 25:21; 30:1,22f.; 1 Sam. 1:2,5-7, l0f.; Prov. 30:15f; Luke 1:7,24f.,58). 7. There are many examples in Scripture of fruitful parents among the godly (Gen. 3:20; 4:1,25; 5:4; 24:60; 30:1-24; Judg. 13:2f; Job 1:2; 42:13-16). 8. The Word of God prohibits us to "put asunder" marriage (Matt. 19:4-6), including its purposes (1 Cor. 7:2,5; Gen. 2:24). 9. The Bible exhibits the wrath of God upon those who defy His will (Gen. 38:8-10; Exod. 21:22; Rom. 1:18). 10. God desires that we put our trust in Him in all matters, also in His will and ability to provide for the children that He gives us (Exod. 23:20,26; Psalm 30:7; 37:25f.; Phil 4:13; 1 Pet. 5:7). Pastors should counsel families both publicly and privately to observe these principles. The churches and ministers should not take it upon themselves to investigate the private practices of their members (Eighth Commandment). Refusal to reproduce should be treated first by patient instruction and counsel. Nevertheless, when a situation becomes a public scandal then evangelical discipline is in order (Matt. 18:17). While we allow for exegetical differences and exceptional cases (casuistry), we must also maintain and teach the principles relating to this issue (Matt. 28:20; Acts 20:27). Such was the united teaching of Dr. Martin Luther and the "Old Missouri" fathers (C.F.W. Walther, F. Pieper, A.L. Graebner, C.M. Zorn, W.H.T. Dau, J.T. Mueller, W. Dallman, F. Bente, E.W.A. Koehler, L. Fuerbringer, T. Engelder, Th. Laetsch, G. Luecke, W.A. Maier, M.J. Naumann, et al.) and LCR leaders such as P.E. Kretzmann and W.H. McLaughlin. The reasons given to justify the prevention of conception are often based upon myths, selfishness, materialism, hedonism (love of pleasure), convenience, usurpation of God's prerogative, or humanistic reasoning and generally indicate a distrust of the Almighty God and His Word."
January 1, 1970
https://en.wikiquote.org/wiki/Christian_views_on_birth_control