Are DNA Genealogy Services Accurate?

For more details, read Cold-Case Christianity: A Homicide Detective Investigates the Claims of the Gospels (http://amzn.to/2AW8bc5).

Read: What Ancestry DNA Kits Reveal About God, Our Past, and the Way Forward.
https://coldcasechristianity.com/writings/what-ancestry-dna-kits-reveal-about-god-our-past-and-the-way-forward/.

Lawbreaker cases are being solved with DNA and personal individuals are using DNA to trace their genealogy and find family members. Are genealogy services precise?