From the bible version that I'm reading, it mentions the 'rod'. Proverbs 29:15 - A rod and a reprimand impart wisdom, but children left to themselves disgrace their mother.
Proverbs 29:17 - Discipline your children, and they will give you peace: they will bring you the delights you desire.
Proverbs 23:13-14 Do not withhold discipline from your children; if you punish them with the rod, they will not die. Punish them with the rod and save them from death.
This is why reading the entire word of God is so important. I have not read the entire bible from Genesis to Revelations, but I have read a good bit of it and while I believe (from what I have read and studied) physically disciplining your child is ok, there is also self-control and love, which has to be included in all forms of discipline. We should not spank our children out of anger, but out of love, because we want them to be better people. I remember, thinking 'now how can I physically discipline my son' if I'm not angry. Because usually, by the time I've calmed down, I don't want to spank. But I've also realized that a spanking (or as well call it around here, 'whoopin', LOL) is good for him. I don't believe in embarrassment or abuse, but I do know that all children born into sin and we as parents must show them the way to go. And when I child knows better, they should do better. Plain and simple. And if they continue to act out, a whoopin wont hurt them. When I child sees that he or she can get away with whatever they want, they just may continue to do it (shoot, we as adults are like that too with our Father (in Heaven) - but praise God He is a lot more patient with us)).
Now on the other hand, every parent has their own strategy. Some choose to spank, some dont. But discipline IS needed. Respect is required. If we let our children do whatever we want to do just to spare their feelings, then what kind of people will they be when they have to face this world without the assistance of mom and dad?? If a child uses bad language, don't laugh, do something about it. If a child goes around hitting on others 'just because' nip it in the bud. God has made us parents for a reason, and if we don't know what to do, he is there every step of the way to help us and guide us through. Praise God!!!