Let's look at what the official "Canon of Dort" states about that which has become known as the five points of Calvinism, or TULIP, in the Reformed Doctrine.
First, out of order at the source linked, someone asked about the children of the elect and are they saved simply by being born to "elect" parents. Yes, according to the canon of Dort.
Article 17Since we are to judge of the will of God from His Word which testifies that the children of believers are holy, not by nature, but in virtue of the covenant of grace, in which they, together with the parents, are comprehended, godly parents have no reason to doubt of the election and salvation of their children whom it pleaseth God to call out of this life in their infancy.
FIRST HEAD OF DOCTRINEOf Divine Predestination
Article 7
Election is the unchangeable purpose of God, whereby, before the foundation of the world, He hath out of mere grace, according to the sovereign good pleasure of His own will, chosen, from the whole human race, which had fallen through their own fault from their primitive state of rectitude into sin and destruction, a certain number of persons to redemption in Christ, whom He from eternity appointed the Mediator and Head of the elect, and the foundation of salvation.This elect number, though by nature neither better nor more deserving than others, but with them involved in one common misery, God hath decreed to give to Christ, to be saved by Him, and effectually to call and draw them to His communion by His Word and Spirit, to bestow upon them true faith, justification and sanctification; and having powerfully preserved them in the fellowship of His Son, finally, to glorify them for the demonstration of His mercy and for the praise of His glorious grace, as it is written: “According as He hath chosen us in Him before the foundation of the world, that we should be holy and without blame before Him in love: having predestinated us unto the adoption of children by Jesus Christ to Himself, according to the good pleasure of His will, to the praise of the glory of His grace, wherein He hath made us accepted in the beloved” (Eph. 1:4–6). And elsewhere: “Whom He did predestinate, them He also called: and whom He called, them He also justified: and whom He justified them He also glorified” (Rom. 8:30)
Article 12
The elect in due time, though in various degrees and in different measures, attain the assurance of this their eternal and unchangeable election, not by inquisitively prying into the secret and deep things of God, but by observing in themselves, with a spiritual joy and holy pleasure, the infallible fruits of election pointed out in the Word of God — such as a true faith in Christ, filial fear, a godly sorrow for sin, a hungering and thirsting after righteousness, etc.
Article 13The sense and certainty of this election afford to the children of God additional matter for daily humiliation before Him, for adoring the depth of His mercies, for cleansing themselves, and rendering grateful returns of ardent love to Him, who first manifested so great love towards them. The consideration of this doctrine of election is so far
from encouraging remissness in the observance of the divine commands or from sinking men in carnal security, that these, in the just judgment of God, are the usual effects of rash presumption or of idle and wanton trifling with thegrace of election in those who refuse to walk in the ways of the elect.